add jekyll config
add gitignore
add include folder
add css folder
update jekyll config
add default layout
update head.html
set hello world test
add header include
add footer include
add index-content class
add css test for header and footer
add layout definition to index.html
correct variable use
add xhtml namespace to config
add doctype and namespace variable to default layout
set http-equiv for xhtml
correct url and baseurl
add default about page
add default feed.xml